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You hear gurgles when your water heater is on? Maybe it's time to empty it. If you wish to dismantle your radiator, it will be necessary to empty it of its water. These two operations are simple to perform and require a minimum of tools.

Empty the radiator from its air: the purge

To purge your water radiator, it's very simple. Start by closing the water inlet valve and the water return valve of the radiator. If your boiler has an accelerator (or circulation pump), cut it off.

Place a container under the purge screw of the unit. Then loosen this screw counterclockwise, but not completely, as you may not be able to replace it. You will hear a whistling, which indicates that the air escapes. When the air has been completely evacuated, water comes out of the trap. You can then screw the trap again. Check the boiler pressure.

Your radiator is now purged, and ready for operation without disturbing noises.

Empty the radiator of its water: the drain

To empty your radiator, first purge it, as indicated above, but do not screw the trap. Then locate the water return valve.

Remove the cover, and close the valve with an Allen key. Place a basin under the valve, then unscrew the water return valve nut with a wrench. Empty the radiator water.

You can then completely unscrew the water return valve nut to separate your radiator from the wall. Your radiator is now ready to be dismantled. Do not hesitate to ask for help to carry it, because even emptied of its water, it remains very heavy. However, in some cases, it is not mandatory to empty the radiator before disassembling it!

Emptying your radiator is not a complicated operation and does not require very advanced heating knowledge. Before you begin, simply prepare the right material and make sure you can do all the steps!


Video Instruction: How to Drain a Central Heating Radiator - Remove a Central Heating Radiator